128 diode samsung acuity strips.

N

NothinYet

Active Member
I was trying to help someone on ledgardner.com in trying to run these strips. They are supposedly lm561b+ strips. Here is a link to the strips.
https://www.googleadservices.com/pa...TZ9GhkVylG6n1Jq5ey7RBJo2fOZfY9EhoCYQIQAvD_BwE

The diodes are samsung. They are in groups of 8. 8 placed on strip, then 8 placed the opposite direction, so on and so forth. He hooked up a 48v driver to them and they worked. We were trying to came up with max current. This is the math I came up with for 128 lm561b+ diodes at 48v.

Does my math seem correct here?

I did a little research, and the lm561b+ has a max rating of 180mA per diode. If this strip is 48v I would assume it's 16s 8p. The lm561b+ is about 3v so 16×3=48. So each of the 16 in series would run at 180mA max. .180×8=1.44. So about 1.4A max current per strip?
 
NothinYet said:
I was trying to help someone on ledgardner.com in trying to run these strips. They are supposedly lm561b+ strips. Here is a link to the strips.
https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwjr-8DB_6rcAhXCuMAKHS5iCXsYABACGgJpbQ&ae=1&ohost=www.google.com&cid=CAESEeD2SVYJ3gil5j_7hceQ7RDn&sig=AOD64_2I04b-xvyzm0uZ9hutsjmbnD1L_Q&ctype=5&q=&ved=0ahUKEwiU9rjB_6rcAhVp0YMKHTaIChkQwg8IJg&adurl=https://rover.ebay.com/rover/1/711-117182-37290-0/2?mpre=https%3A%2F%2Fwww.ebay.com%2Fi%2F322932940601%3Fchn%3Dps&itemid=322932940601&targetid=376010661525&device=m&adtype=pla&googleloc=9015669&poi=&campaignid=962079493&adgroupid=50351807200&rlsatarget=pla-376010661525&abcId=1129816&merchantid=114725635&gclid=CjwKCAjw7cDaBRBtEiwAsxprXdS9rrKJvU9JQ1uAObL4xsTZ9GhkVylG6n1Jq5ey7RBJo2fOZfY9EhoCYQIQAvD_BwE

The diodes are samsung. They are in groups of 8. 8 placed on strip, then 8 placed the opposite direction, so on and so forth. He hooked up a 48v driver to them and they worked. We were trying to came up with max current. This is the math I came up with for 128 lm561b+ diodes at 48v.

Does my math seem correct here?

I did a little research, and the lm561b+ has a max rating of 180mA per diode. If this strip is 48v I would assume it's 16s 8p. The lm561b+ is about 3v so 16×3=48. So each of the 16 in series would run at 180mA max. .180×8=1.44. So about 1.4A max current per strip?
Click to expand...
They're 5000K. Just know that. Not the right color for flowering. Great for Veg though.
 
NothinYet said:
I was trying to help someone on ledgardner.com in trying to run these strips. They are supposedly lm561b+ strips. Here is a link to the strips.
https://www.googleadservices.com/pagead/aclk?sa=L&ai=DChcSEwjr-8DB_6rcAhXCuMAKHS5iCXsYABACGgJpbQ&ae=1&ohost=www.google.com&cid=CAESEeD2SVYJ3gil5j_7hceQ7RDn&sig=AOD64_2I04b-xvyzm0uZ9hutsjmbnD1L_Q&ctype=5&q=&ved=0ahUKEwiU9rjB_6rcAhVp0YMKHTaIChkQwg8IJg&adurl=https://rover.ebay.com/rover/1/711-117182-37290-0/2?mpre=https%3A%2F%2Fwww.ebay.com%2Fi%2F322932940601%3Fchn%3Dps&itemid=322932940601&targetid=376010661525&device=m&adtype=pla&googleloc=9015669&poi=&campaignid=962079493&adgroupid=50351807200&rlsatarget=pla-376010661525&abcId=1129816&merchantid=114725635&gclid=CjwKCAjw7cDaBRBtEiwAsxprXdS9rrKJvU9JQ1uAObL4xsTZ9GhkVylG6n1Jq5ey7RBJo2fOZfY9EhoCYQIQAvD_BwE

The diodes are samsung. They are in groups of 8. 8 placed on strip, then 8 placed the opposite direction, so on and so forth. He hooked up a 48v driver to them and they worked. We were trying to came up with max current. This is the math I came up with for 128 lm561b+ diodes at 48v.

Does my math seem correct here?

I did a little research, and the lm561b+ has a max rating of 180mA per diode. If this strip is 48v I would assume it's 16s 8p. The lm561b+ is about 3v so 16×3=48. So each of the 16 in series would run at 180mA max. .180×8=1.44. So about 1.4A max current per strip?
Click to expand...
I've got some of the 56 diode Acuity strips - they work ok. No way to tell what diode they have, but the Acuity web page claims "up to 120 lm/w efficiency". If they are 22" strips I'd run them at 500 mA, otherwise they are going to get really hot with that high of diode count, even with heatsinks.

They should make a hell of a lot of light, even at that current.
 
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